1 Geothermal energy has been around since the earth formed and is a renewable energy source. 2  The term âGeothermalâ derives from the Greek words âgeoâ (meaning earthâ and âthermeâ (meaning heat). 3  Geothermal activity provides the energy behind volcanoes, hot springs and geysers.hese facts are specific to how we can produce electricity from geothermal energy: 1  The process of generating geothermal power has been in existence for over a hundred years and was first tested in Italy by Piero Ginori Conti in 1903.
Plugged Ears Caused by Fluid in the Ear. Plugged ears can be a result of trapped fluid in the auditory tube. The auditory tube normally carries unwanted debris from the ears to the back of the throat where it is swallowed but sometimes it can become plugged and fluid becomes trapped in the middle ear.
I'm just getting over a cold, and my ears feel plugged. With plugged ears, your eustachian tubes â which run between the middle of your ears and the back of your nose â become obstructed. You may experience a feeling of fullness or pressure in your ears. You may also have ear pain, dizziness and muffled hearing. As swelling from the cold subsides, the obstruction usually resolves. If your ears are plugged, try swallowing, yawning or chewing sugar-free gum to open your eustachian tubes.